Terms that are frequently used in the knowledge pages are explained in the glossary. Many biological and medicinal terms are listed. This does not automatically mean that EMFs were a health problem. The connections between EMF, biology and health are shown in the topic pages.

In addition, we also recommend the glossary of the EMF-portal of the Uniklinik RWTH Aachen.


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Gradual change of a normal cell into a malignant tumour.

cardio vascular changes

Physiological changes which affect the heart and the blood vessels.

Central Nervous System (CNS)

The central nervous system (CNS) encompasses the spinal cord and the brain as well as its covering membrane. All information from the body and the environment come together and are processed here, and then the reactions generated in the shape of movement, behaviour and organ activity form.

Cerebral oedema

Swelling of the brain tissue caused by an accumulation of fluid.


Threadlike structure of DNA and adjacent proteins («packing»). A human being has 46 chromosomes that hold the genetic make-up (genome).

Cognitive performance

The abilities connected to perception and understanding (thinking, remembering, learning and judgement).


An area of genetics that deals with structures visible with an optical microscope, in particular chromosomes. Cytogenetic conspicuity portrays major changes of the genetic make-up which can belong to symptoms of serious diseases.